Local police said gunmen in southwestern Pakistan attacked a NATO supply convoy, killing one truck driver.

A senior police official, Inayat Bugti, said about eight gunmen approached the convoy on motorcycles in the Bolan district of Baluchistan Province late on December 11, ordering it to stop and then firing on the tankers.

The convoy was attacked while returning to the port city of Karachi from the Afghan border, which Pakistan has closed to NATO supplies after NATO air strikes on November 26 killed 24 Pakistani soldiers.

The closing of NATO's supply routes through Pakistan has left hundreds of NATO oil tankers and trucks stranded and exposed to militant attacks.